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Novel twisted pair and micro alternating-current quantum voltage cross-temperature-zone transmission method

A twisted pair, a new type of technology, applied in the direction of measuring current/voltage, cables with double-stranded/quad-stranded, measuring only voltage, etc. The instrument has no effect on the measurement of small AC voltage and other problems, and achieves the effect of no influence on the measurement results and accurate measurement.

Pending Publication Date: 2021-04-09
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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Problems solved by technology

[0005] In the cross-temperature transmission of the AC quantum voltage above 10mV on the coaxial line, the coaxial line has a good transmission effect, and for the small extreme value of the AC voltage, because the value of the synthesized small AC voltage is too low, it usually reaches Hundreds or even tens of microvolts, the DC component generated by the tiny AC voltage passing through the coaxial line across a temperature zone of nearly 300 degrees is much larger than the tiny AC voltage component, which has a great impact on the output and measurement of the tiny AC quantum voltage
For example, when the Josephson at low temperature is combined into an AC voltage of 100 μV, it contains a DC component of nearly 300 μV when it is transmitted to room temperature, which seriously affects the measurement of small AC voltage measurements by room temperature instruments

Method used

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  • Novel twisted pair and micro alternating-current quantum voltage cross-temperature-zone transmission method

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Embodiment Construction

[0022] In order to understand the characteristics and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present disclosure. In the following technical description, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawings.

[0023] The purpose of the present invention is to provide a new type of twisted pair to reduce the influence of the twisted pair itself on the measurement result of the small AC voltage value.

[0024] In order to ...

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Abstract

The invention discloses a novel twisted pair and a micro alternating-current quantum voltage cross-temperature-zone transmission method, and belongs to the technical field of cables. The two metal enameled wires with the same length are uniformly wound with each other and then are wrapped by an insulating sleeve to form the twisted pair, and the novel twisted pair can be used for transmitting micro alternating-current quantum voltage across a temperature zone; the twisted pair is applied to cross-temperature-zone signal transmission between a low temperature and a normal temperature, the influence of a direct-current component generated during lead transmission is suppressed, and the accurate measurement of a micro alternating-current quantum voltage is facilitated.

Description

technical field [0001] The invention relates to the field of cable technology, in particular to a new type of twisted pair wire and a method for transmitting micro AC quantum voltage across temperature zones. Background technique [0002] The generation and synthesis of quantized AC voltage is based on the AC Josephson effect, that is, the steps of the synthesized quantum voltage are related to the frequency and the number of Josephson junctions. The programmable Josephson quantum voltage standard adopts the method of changing the number of Josephson single junctions to generate a ladder-shaped AC quantum voltage to realize the simulation of the AC voltage signal. However, due to the limitation of the single-junction quantum voltage value, it is difficult to synthesize and accurately measure AC voltages below millivolts, especially microvolts. [0003] At present, the synthesis of tiny AC quantum voltage can only be realized by changing the microwave driving frequency, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B11/04H01B11/12G01R19/00
CPCH01B11/04H01B11/12G01R19/0084
Inventor 康焱张力丹
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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